* Use READABLE_STRING_GENERAL instead of STRING_GENERAL for routines expecting a string. This enables us to use IMMUTABLE_STRINGs as argument without conversion.

* As a consequence we are also now using `same_string' instead of `is_equal' to compare strings which will handle any type of strings.
* Enforced the rule that arguments are READABLE_STRING_GENERAL and queries are STRING_32 when unicode is expected.
* The most delicate part of the change was the update of the encoding library. Now we have two queries:last_converted_string_32 and last_converted_string_8 in addition of the typeless last_converted_string. The idea is that if you know that you are converting to something where characters are at least 2 bytes wide, you know that you have to use STRING_32, otherwise it will be STRING_8.
* Unlike STRING_GENERAL, READABLE_STRING_GENERAL does not have a conversion to STRING_32 and thus in a few places we had to use `as_string_32' for explicit conversion which I found better.


git-svn-id: https://svn.origo.ethz.ch/eiffelstudio/trunk/Src/library/cURL@85350 8089f293-4706-0410-a29e-feb5c42a2edf

curl_easy_externals.e

@@ -29,7 +29,7 @@ feature -- Command
 			exists: Result /= default_pointer
 		end
 
-	setopt_string (a_curl_handle: POINTER; a_opt: INTEGER; a_string: STRING_GENERAL)
+	setopt_string (a_curl_handle: POINTER; a_opt: INTEGER; a_string: READABLE_STRING_GENERAL)
 			-- Declared as curl_easy_setopt().
 		require
 			exists: a_curl_handle /= default_pointer
@@ -396,7 +396,7 @@ feature {NONE} -- C externals
 
 note
 	library:   "cURL: Library of reusable components for Eiffel."
-	copyright: "Copyright (c) 1984-2009, Eiffel Software and others"
+	copyright: "Copyright (c) 1984-2010, Eiffel Software and others"
 	license:   "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
 	source: "[
 			Eiffel Software